EP3555893A1 - Gitterstruktur für röntgenbildgebung - Google Patents

Gitterstruktur für röntgenbildgebung

Info

Publication number
EP3555893A1
EP3555893A1 EP17822600.7A EP17822600A EP3555893A1 EP 3555893 A1 EP3555893 A1 EP 3555893A1 EP 17822600 A EP17822600 A EP 17822600A EP 3555893 A1 EP3555893 A1 EP 3555893A1
Authority
EP
European Patent Office
Prior art keywords
grating
ray
members
web
gaps
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP17822600.7A
Other languages
English (en)
French (fr)
Inventor
Thomas Koehler
Gereon Vogtmeier
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Koninklijke Philips NV
Original Assignee
Koninklijke Philips NV
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Koninklijke Philips NV filed Critical Koninklijke Philips NV
Publication of EP3555893A1 publication Critical patent/EP3555893A1/de
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21K—HANDLING OF PARTICLES OR IONISING RADIATION NOT OTHERWISE PROVIDED FOR; IRRADIATION DEVICES; GAMMA RAY OR X-RAY MICROSCOPES
    • G21K1/00—Arrangements for handling particles or ionising radiation, e.g. focusing or moderating
    • G21K1/02—Arrangements for handling particles or ionising radiation, e.g. focusing or moderating using diaphragms, collimators
    • G21K1/025—Arrangements for handling particles or ionising radiation, e.g. focusing or moderating using diaphragms, collimators using multiple collimators, e.g. Bucky screens; other devices for eliminating undesired or dispersed radiation
    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21K—HANDLING OF PARTICLES OR IONISING RADIATION NOT OTHERWISE PROVIDED FOR; IRRADIATION DEVICES; GAMMA RAY OR X-RAY MICROSCOPES
    • G21K1/00—Arrangements for handling particles or ionising radiation, e.g. focusing or moderating
    • G21K1/06—Arrangements for handling particles or ionising radiation, e.g. focusing or moderating using diffraction, refraction or reflection, e.g. monochromators
    • G21K1/067—Arrangements for handling particles or ionising radiation, e.g. focusing or moderating using diffraction, refraction or reflection, e.g. monochromators using surface reflection, e.g. grazing incidence mirrors, gratings
    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21K—HANDLING OF PARTICLES OR IONISING RADIATION NOT OTHERWISE PROVIDED FOR; IRRADIATION DEVICES; GAMMA RAY OR X-RAY MICROSCOPES
    • G21K2207/00—Particular details of imaging devices or methods using ionizing electromagnetic radiation such as X-rays or gamma rays
    • G21K2207/005—Methods and devices obtaining contrast from non-absorbing interaction of the radiation with matter, e.g. phase contrast

Definitions

  • the first plurality of the bar members and the web members thus provide a constructive structural arrangement of the grating structure, i.e. a constructive or supportive structure of the grating structure.
  • the second plurality of the gaps provides the X-ray absorbing arrangement of the grating structure, i.e. an X-ray absorptive or X-ray blocking structure of the grating structure.
  • the web members are provided along the gaps as a diagonal structure in relation to an X-ray viewing direction.
  • the diagonal structure interrupts the absorbing structure along the gaps.
  • the gaps may be provided with an X-ray transparent filler or may also be provided non- filled. Since the web members are provided in an inclined manner, the X-ray signal is improved due to more distributed attenuation by the web members in relation to the X-ray radiation direction. According to an example, the web members are arranged between the adjacent bar members such that the web members are connecting opposing portions of the bar members.
  • the X-, XV-or VV- pattern is provided with a displacement such that a gap exists to be able to fill the lower part e.g. with X-ray absorbing material.
  • a distance is provided to achieve a V V pattern; or a vertical displacement of the upper ends is provided such that a gap exists along a vertical direction.
  • Fig. 1 shows a section of an example of a grating in a perspective view.
  • Fig. 3 shows a pattern of repeated inclined web members 24.
  • the web members 24 are arranged repeatedly in the gap direction with a distance D over a gap height H.
  • the web members 24 have an inclination ratio in relation to the height direction R of D/H.
  • the distance D can also be referred to as pitch.
  • there is a dedicated tilt angle such that a homogeneous grating structure is achieved in transmission perpendicular to the grating area.

Landscapes

  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Measurement Of Radiation (AREA)
  • Apparatus For Radiation Diagnosis (AREA)
EP17822600.7A 2016-12-15 2017-12-12 Gitterstruktur für röntgenbildgebung Withdrawn EP3555893A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP16204258 2016-12-15
PCT/EP2017/082305 WO2018108853A1 (en) 2016-12-15 2017-12-12 Grating structure for x-ray imaging

Publications (1)

Publication Number Publication Date
EP3555893A1 true EP3555893A1 (de) 2019-10-23

Family

ID=57708343

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17822600.7A Withdrawn EP3555893A1 (de) 2016-12-15 2017-12-12 Gitterstruktur für röntgenbildgebung

Country Status (5)

Country Link
US (1) US10923243B2 (de)
EP (1) EP3555893A1 (de)
JP (1) JP7216646B2 (de)
CN (1) CN110088846A (de)
WO (1) WO2018108853A1 (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3786981A1 (de) * 2019-08-30 2021-03-03 Koninklijke Philips N.V. Herstellung stabiler überbrückungen für dax-gitter
WO2021046458A1 (en) * 2019-09-06 2021-03-11 The Board Of Trustees Of The Leland Stanford Junior University Single shot analyzer grating for differential phase contrast x-ray imaging and computed tomography
EP3796335A1 (de) * 2019-09-18 2021-03-24 Koninklijke Philips N.V. Röntgenstrahlenstreuraster

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140177781A1 (en) * 2012-12-21 2014-06-26 General Electric Company Collimator grid and an associated method of fabrication

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JPH03120500A (ja) * 1989-10-04 1991-05-22 Toshiba Corp 多孔コリメータ及びその製造方法
US7638732B1 (en) * 2002-10-24 2009-12-29 Analogic Corporation Apparatus and method for making X-ray anti-scatter grid
DE102005028411B4 (de) 2005-06-20 2008-08-21 Siemens Ag Kollimator für einen Strahlendetektor und Computertomographiegerät
DE102006037281A1 (de) 2006-02-01 2007-08-09 Siemens Ag Röntgenoptisches Durchstrahlungsgitter einer Fokus-Detektor-Anordnung einer Röntgenapparatur zur Erzeugung projektiver oder tomographischer Phasenkontrastaufnahmen von einem Untersuchungsobjekt
JP5258504B2 (ja) * 2008-10-24 2013-08-07 キヤノン株式会社 Ｘ線位相イメージングに用いられる位相格子及びその製造方法、該位相格子を用いたｘ線位相コントラスト像の撮像装置、ｘ線コンピューター断層撮影システム
US20110248174A1 (en) * 2008-12-09 2011-10-13 O'connor Michael K Collimator for Low-Dose Molecular Breast Imaging
JP5587985B2 (ja) * 2009-05-19 2014-09-10 コーニンクレッカ フィリップス エヌ ヴェ 位相コントラストイメージング用格子
CN101943668B (zh) * 2009-07-07 2013-03-27 清华大学 X射线暗场成像系统和方法
JP5660910B2 (ja) 2010-03-30 2015-01-28 富士フイルム株式会社 放射線画像撮影用グリッドの製造方法
DE102010049994B3 (de) 2010-10-28 2012-05-10 Karlsruher Institut für Technologie Resiststruktur zur Herstellung einer röntgenoptischen Gitterstruktur
WO2012063169A1 (en) * 2010-11-08 2012-05-18 Koninklijke Philips Electronics N.V. Grating for phase contrast imaging
JP2012161412A (ja) * 2011-02-04 2012-08-30 Fujifilm Corp 放射線画像撮影用グリッド及びその製造方法、並びに放射線画像撮影システム
JP5860613B2 (ja) 2011-05-26 2016-02-16 株式会社オプトニクス精密 Ｘ線干渉計用の回折格子及びその製造方法
CN104066375B (zh) * 2012-01-24 2017-08-11 皇家飞利浦有限公司 多方向相衬x射线成像
DE112013002177A5 (de) 2012-04-24 2014-12-31 Siemens Aktiengesellschaft Röntgenvorrichtung

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140177781A1 (en) * 2012-12-21 2014-06-26 General Electric Company Collimator grid and an associated method of fabrication

Also Published As

Publication number Publication date
JP2020514688A (ja) 2020-05-21
CN110088846A (zh) 2019-08-02
JP7216646B2 (ja) 2023-02-01
US20190355488A1 (en) 2019-11-21
WO2018108853A1 (en) 2018-06-21
US10923243B2 (en) 2021-02-16

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